logreader: skip internal source if connection refused (#32418)

* logreader: skip internal source if connection refused

* fix indentation

* fix spacing

* explicit ipv4 and tcp
old-commit-hash: 2a46d71fc8

tools/lib/filereader.py

@@ -10,10 +10,11 @@ DATA_ENDPOINT = os.getenv("DATA_ENDPOINT", "http://data-raw.comma.internal/")
 def internal_source_available():
   try:
     hostname = urlparse(DATA_ENDPOINT).hostname
-    if hostname:
-      socket.gethostbyname(hostname)
-      return True
-  except socket.gaierror:
+    port = urlparse(DATA_ENDPOINT).port or 80
+    with socket.socket(socket.AF_INET,socket.SOCK_STREAM) as s:
+      s.connect((hostname, port))
+    return True
+  except (socket.gaierror, ConnectionRefusedError):
     pass
   return False